Staged repair of the aortic arch and downstream aorta using the elephant trunk technique is widely accepted for extensive aortic disease. However, elephant trunk retrieval is challenging in patients with unclampable descending aorta caused by extreme aneurysmal dilation or surrounding tissue adhesion. Here, we introduce a new elephant trunk retrieval technique using the step-by-step aortic clamping in descending aortic replacement of dissecting aortic aneurysm. This technique is a safe and feasible method of elephant trunk retrieval that consists of staged clamping and intraoperative ultrasound assessment of blood flow in the aorta.

中文翻译：

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用于安全取出象鼻的分步主动脉钳夹技术

使用象鼻技术对主动脉弓和下游主动脉进行分期修复被广泛接受用于广泛的主动脉疾病。然而，对于因极端动脉瘤扩张或周围组织粘连而导致降主动脉不可夹紧的患者，象鼻提取具有挑战性。在这里，我们介绍了一种新的象鼻检索技术，在解剖主动脉瘤的降主动脉置换中使用逐步主动脉钳夹。该技术是一种安全可行的象鼻提取方法，包括分阶段夹紧和术中对主动脉血流的超声评估。